EP1971718A1 - Walzenmantel - Google Patents
WalzenmantelInfo
- Publication number
- EP1971718A1 EP1971718A1 EP06819326A EP06819326A EP1971718A1 EP 1971718 A1 EP1971718 A1 EP 1971718A1 EP 06819326 A EP06819326 A EP 06819326A EP 06819326 A EP06819326 A EP 06819326A EP 1971718 A1 EP1971718 A1 EP 1971718A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll shell
- plastic layer
- compressible
- roll
- incompressible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/029—Wet presses using special water-receiving belts
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/0066—Calenders; Smoothing apparatus using a special calendering belt
Definitions
- the invention relates to a roll shell for treating a paper, cardboard, tissue or other fibrous web in a machine for producing and / or finishing the same consisting of one or more plastic layers, of which at least one is compressible and at least one support element in shape a fabric, thread lay o. ⁇ .
- the flexible roll shells for dewatering or smoothing the fibrous web essentially consist of a polyurethane matrix which is reinforced with a fabric or scrim.
- roller shells are pressed to form a press nip by a contact pressure element to a counter-roller.
- the object of the invention is therefore to reduce the load on the support element.
- this object is achieved in that at least one carrier element is embedded in a compressible plastic layer.
- the fabric must absorb the major part of the load in the form of tensile stresses.
- this can already absorb a large part of a pressurization because of the elasticity and thus relieve the carrier element.
- the effect can be further improved if - if a plurality of carrier elements are present - all carrier elements are embedded in one or more compressible plastic layers.
- each carrier element it is possible for each carrier element to be embedded in a separate plastic layer or a plurality of carrier elements in a common plastic layer.
- the compressibility can be achieved or enhanced simply by a porous structure, in particular a microcellular structure of the plastic layer.
- microcellular structures which are formed by closed, cellular bubbles within the plastic layer whose diameter is smaller than 0.3 mm.
- the compressible plastic layer is formed by an elastomer, in particular polyurethane.
- Microcellular structures can be produced relatively easily, especially in the case of polyurethanes, by the addition of water in the crosslinker, which leads to the formation of extremely fine CO 2 bubbles as a result of a chemical reaction.
- air or an inert gas can also be mixed in the production of elastomers.
- Loading properties of the roll shell advantageous if the density of the compressible plastic layer is less than 1, 1 g / cm 3 , preferably between 0.4 - 0.8 g / cm 3 .
- the compression behavior of the compressible layer is essentially characterized in that it is linearly elastic in the region of a compression between 10 and 40%.
- the compression modulus E is the ratio between the applied compressive stress ⁇ and the resulting compression ⁇
- the compression modulus E is between 1 and 5 MPa.
- the roll shell consists only of a plastic layer.
- the roll shell consists of several plastic layers, of which at least one is incompressible. - A -
- the incompressible plastic layer should be formed mainly because of the high wear resistance of an elastomer, in particular polyurethane.
- the inside of the roll mantle is to be particularly wear-resistant and / or smooth, it is advantageous if the inside is formed by an incompressible plastic layer.
- the inside of the roll shell should be formed by a compressible plastic layer.
- Increased roughness can support, for example, the lubrication between the roll shell and a contact pressure, because it promotes more lubricant in the lubrication gap.
- the outside of the roll mantle is formed by an incompressible plastic layer.
- the ratio between the volume of the support element and the volume of the compressible plastic layer should be greater than or equal to 0.1, preferably greater than or equal to 0.2.
- the carrier element is formed by transversely and circumferentially extending threads.
- the distance between the threads running in one direction should be less than 3 mm and the distance between crossing threads should be between 0 and 4 mm, preferably between 0 and 1 mm.
- Figure 1 a roll shell 3 with incompressible outer layer
- Figure 2 with incompressible inner and outer layer
- FIG. 3 without incompressible layer
- FIG. 4 a schematic cross section through a press arrangement.
- the roll shell 3 according to the invention is part of a press roll, wherein the flexible and approximately cylindrical roll shell 3 is pressed by a pressing element 4 with concave pressing surface to a counter roll 10.
- the roll shell 3 consists essentially of polyurethane and, for example, a carrier element 5 in the form of a thread scrim for reinforcement.
- the carrier element 5 is embedded in a plastic layer 6 of polyurethane having a microcellular structure.
- the microcellular structure is formed here by distributed existing bubbles 11 whose diameter is less than 0.3 mm.
- This microcellular structure leads to an improved compressibility of the plastic layer 6 and thus relieves the carrier element 5 under pressure load.
- the density of this compressible plastic layer 6 is between 0.4 and 0.8 g / cm 3 .
- the entire roll shell 3 consists only of the compressible plastic layer 6 made of polyurethane. This simplifies the production of the roll shell 3 considerably.
- the roll mantle 3 according to FIG. 1 has an outer, incompressible plastic layer 7 made of solid polyurethane.
- the roll shell 3 shown in FIG. 2 has, in addition to the incompressible outer 7, an incompressible inner plastic layer 8 made of solid polyurethane.
- the wear-resistant, smooth inner plastic layer 8 allows a subsequent processing in the production of the roll shell 3, without the risk of the formation of open pores and thus a roughening of the surface.
- the roll shell in FIG. 2 has grooves 9 running on the outside in the circumferential direction for receiving water during the dewatering of the fibrous web 1.
- grooves 9 extend completely within the incompressible, outer plastic layer 7, which has a positive effect on the wear and the dimensional stability of the grooves 9.
Landscapes
- Paper (AREA)
- Rolls And Other Rotary Bodies (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005060590A DE102005060590A1 (de) | 2005-12-17 | 2005-12-17 | Walzenmantel |
| PCT/EP2006/068218 WO2007068537A1 (de) | 2005-12-17 | 2006-11-08 | Walzenmantel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1971718A1 true EP1971718A1 (de) | 2008-09-24 |
| EP1971718B1 EP1971718B1 (de) | 2011-05-18 |
Family
ID=37801460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06819326A Active EP1971718B1 (de) | 2005-12-17 | 2006-11-08 | Walzenmantel |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8034216B2 (de) |
| EP (1) | EP1971718B1 (de) |
| JP (1) | JP4787882B2 (de) |
| AT (1) | ATE510065T1 (de) |
| DE (1) | DE102005060590A1 (de) |
| WO (1) | WO2007068537A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008001854A1 (de) * | 2008-05-19 | 2009-11-26 | Voith Patent Gmbh | Pressfilz |
| DE102008056500A1 (de) * | 2008-11-08 | 2010-05-12 | Innova-Paper-Form Gmbh | Verfahren und Vorrichtung zur Strukturierung von Materialien |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL244435A (de) * | 1958-10-16 | 1900-01-01 | ||
| US4552620A (en) * | 1983-09-19 | 1985-11-12 | Beloit Corporation | Paper machine belt |
| GB8328014D0 (en) * | 1983-10-19 | 1983-11-23 | Scapa Porritt Ltd | Paper-machine clothing |
| JPH0229795B2 (ja) * | 1984-06-19 | 1990-07-02 | Yamauchi Rubber Ind Co Ltd | Sukigamikoteiniokeruekusutendetsudonitsupupuresuyoendoresuberuto |
| JPS61252389A (ja) | 1985-04-25 | 1986-11-10 | 市川毛織株式会社 | 抄紙用加圧ベルト |
| JPH0226960Y2 (de) * | 1985-09-13 | 1990-07-20 | ||
| DE3715153A1 (de) * | 1987-05-07 | 1988-12-01 | Voith Gmbh J M | Verstaerkter pressmantel fuer eine presseinrichtung zur behandlung bahnfoermigen gutes, wie z. b. von papierbahnen, sowie verfahren und vorrichtung zu seiner herstellung |
| US5071697A (en) * | 1990-01-22 | 1991-12-10 | Appleton Mills | Structure for extracting water from a paper web in a papermaking process |
| SE502960C2 (sv) * | 1994-06-15 | 1996-02-26 | Nordiskafilt Ab Albany | Arrangemang för kalandrering |
| US5700356A (en) * | 1996-01-19 | 1997-12-23 | Lefkowitz; Leonard R. | Air permeable belt for dewatering web in press nip |
| DE19706097A1 (de) | 1997-02-17 | 1998-08-20 | Voith Sulzer Papiermasch Gmbh | Preßband, insbesondere Preßmantel |
| US6908532B2 (en) * | 1999-06-01 | 2005-06-21 | Voith Sulzer Papiermaschinen Gmbh | Press belt |
| JP2001089989A (ja) * | 1999-09-20 | 2001-04-03 | Ichikawa Woolen Textile Co Ltd | 湿紙搬送ベルト及びその製造方法 |
| US6383339B1 (en) * | 2000-03-30 | 2002-05-07 | Weavexx Corporation | Transfer belt |
| ATE254209T1 (de) * | 2000-06-06 | 2003-11-15 | Heimbach Gmbh Thomas Josef | Schuhpressenband für papiermaschinen |
| ATE364750T1 (de) * | 2001-04-18 | 2007-07-15 | Stowe Woodward Ag | Schuhpressenbelt |
| JP2003049383A (ja) * | 2001-07-31 | 2003-02-21 | Ichikawa Woolen Textile Co Ltd | 製紙カレンダ用弾性ベルト |
| EP1293601A1 (de) * | 2001-09-17 | 2003-03-19 | Stowe Woodward Aktiengesellschaft | Schuhpressenbelt |
| JP2004084125A (ja) * | 2002-08-27 | 2004-03-18 | Ichikawa Woolen Textile Co Ltd | 製紙機械用ベルト |
-
2005
- 2005-12-17 DE DE102005060590A patent/DE102005060590A1/de not_active Withdrawn
-
2006
- 2006-11-08 AT AT06819326T patent/ATE510065T1/de active
- 2006-11-08 JP JP2008544915A patent/JP4787882B2/ja not_active Expired - Fee Related
- 2006-11-08 WO PCT/EP2006/068218 patent/WO2007068537A1/de not_active Ceased
- 2006-11-08 EP EP06819326A patent/EP1971718B1/de active Active
- 2006-11-08 US US12/088,597 patent/US8034216B2/en active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007068537A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4787882B2 (ja) | 2011-10-05 |
| US20080251228A1 (en) | 2008-10-16 |
| DE102005060590A1 (de) | 2007-06-21 |
| ATE510065T1 (de) | 2011-06-15 |
| US8034216B2 (en) | 2011-10-11 |
| JP2009529610A (ja) | 2009-08-20 |
| EP1971718B1 (de) | 2011-05-18 |
| WO2007068537A1 (de) | 2007-06-21 |
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